# 数据类型
my_list = [1, 2, 3]
my_dict = {"name": "Alice", "age": 25}
my_set = {1, 2, 3, 4}

# 控制结构
for i in range(5):
    if i % 2 == 0:
        print(f"{i} is even")
    else:
        print(f"{i} is odd")